source: trunk/essentials/dev-lang/perl/ext/B/B.xs

Last change on this file was 3181, checked in by bird, 18 years ago

perl 5.8.8
File size: 28.7 KB
Line 
1/* B.xs
2 *
3 * Copyright (c) 1996 Malcolm Beattie
4 *
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
7 *
8 */
9
10#define PERL_NO_GET_CONTEXT
11#include "EXTERN.h"
12#include "perl.h"
13#include "XSUB.h"
14
15#ifdef PerlIO
16typedef PerlIO * InputStream;
17#else
18typedef FILE * InputStream;
19#endif
20
21
22static char *svclassnames[] = {
23 "B::NULL",
24 "B::IV",
25 "B::NV",
26 "B::RV",
27 "B::PV",
28 "B::PVIV",
29 "B::PVNV",
30 "B::PVMG",
31 "B::BM",
32#if PERL_VERSION >= 9
33 "B::GV",
34#endif
35 "B::PVLV",
36 "B::AV",
37 "B::HV",
38 "B::CV",
39#if PERL_VERSION <= 8
40 "B::GV",
41#endif
42 "B::FM",
43 "B::IO",
44};
45
46typedef enum {
47 OPc_NULL, /* 0 */
48 OPc_BASEOP, /* 1 */
49 OPc_UNOP, /* 2 */
50 OPc_BINOP, /* 3 */
51 OPc_LOGOP, /* 4 */
52 OPc_LISTOP, /* 5 */
53 OPc_PMOP, /* 6 */
54 OPc_SVOP, /* 7 */
55 OPc_PADOP, /* 8 */
56 OPc_PVOP, /* 9 */
57 OPc_LOOP, /* 10 */
58 OPc_COP /* 11 */
59} opclass;
60
61static char *opclassnames[] = {
62 "B::NULL",
63 "B::OP",
64 "B::UNOP",
65 "B::BINOP",
66 "B::LOGOP",
67 "B::LISTOP",
68 "B::PMOP",
69 "B::SVOP",
70 "B::PADOP",
71 "B::PVOP",
72 "B::LOOP",
73 "B::COP"
74};
75
76static size_t opsizes[] = {
77 0,
78 sizeof(OP),
79 sizeof(UNOP),
80 sizeof(BINOP),
81 sizeof(LOGOP),
82 sizeof(LISTOP),
83 sizeof(PMOP),
84 sizeof(SVOP),
85 sizeof(PADOP),
86 sizeof(PVOP),
87 sizeof(LOOP),
88 sizeof(COP)
89};
90
91#define MY_CXT_KEY "B::_guts" XS_VERSION
92
93typedef struct {
94 int x_walkoptree_debug; /* Flag for walkoptree debug hook */
95 SV * x_specialsv_list[7];
96} my_cxt_t;
97
98START_MY_CXT
99
100#define walkoptree_debug (MY_CXT.x_walkoptree_debug)
101#define specialsv_list (MY_CXT.x_specialsv_list)
102
103static opclass
104cc_opclass(pTHX_ const OP *o)
105{
106 if (!o)
107 return OPc_NULL;
108
109 if (o->op_type == 0)
110 return (o->op_flags & OPf_KIDS) ? OPc_UNOP : OPc_BASEOP;
111
112 if (o->op_type == OP_SASSIGN)
113 return ((o->op_private & OPpASSIGN_BACKWARDS) ? OPc_UNOP : OPc_BINOP);
114
115#ifdef USE_ITHREADS
116 if (o->op_type == OP_GV || o->op_type == OP_GVSV ||
117 o->op_type == OP_AELEMFAST || o->op_type == OP_RCATLINE)
118 return OPc_PADOP;
119#endif
120
121 switch (PL_opargs[o->op_type] & OA_CLASS_MASK) {
122 case OA_BASEOP:
123 return OPc_BASEOP;
124
125 case OA_UNOP:
126 return OPc_UNOP;
127
128 case OA_BINOP:
129 return OPc_BINOP;
130
131 case OA_LOGOP:
132 return OPc_LOGOP;
133
134 case OA_LISTOP:
135 return OPc_LISTOP;
136
137 case OA_PMOP:
138 return OPc_PMOP;
139
140 case OA_SVOP:
141 return OPc_SVOP;
142
143 case OA_PADOP:
144 return OPc_PADOP;
145
146 case OA_PVOP_OR_SVOP:
147 /*
148 * Character translations (tr///) are usually a PVOP, keeping a
149 * pointer to a table of shorts used to look up translations.
150 * Under utf8, however, a simple table isn't practical; instead,
151 * the OP is an SVOP, and the SV is a reference to a swash
152 * (i.e., an RV pointing to an HV).
153 */
154 return (o->op_private & (OPpTRANS_TO_UTF|OPpTRANS_FROM_UTF))
155 ? OPc_SVOP : OPc_PVOP;
156
157 case OA_LOOP:
158 return OPc_LOOP;
159
160 case OA_COP:
161 return OPc_COP;
162
163 case OA_BASEOP_OR_UNOP:
164 /*
165 * UNI(OP_foo) in toke.c returns token UNI or FUNC1 depending on
166 * whether parens were seen. perly.y uses OPf_SPECIAL to
167 * signal whether a BASEOP had empty parens or none.
168 * Some other UNOPs are created later, though, so the best
169 * test is OPf_KIDS, which is set in newUNOP.
170 */
171 return (o->op_flags & OPf_KIDS) ? OPc_UNOP : OPc_BASEOP;
172
173 case OA_FILESTATOP:
174 /*
175 * The file stat OPs are created via UNI(OP_foo) in toke.c but use
176 * the OPf_REF flag to distinguish between OP types instead of the
177 * usual OPf_SPECIAL flag. As usual, if OPf_KIDS is set, then we
178 * return OPc_UNOP so that walkoptree can find our children. If
179 * OPf_KIDS is not set then we check OPf_REF. Without OPf_REF set
180 * (no argument to the operator) it's an OP; with OPf_REF set it's
181 * an SVOP (and op_sv is the GV for the filehandle argument).
182 */
183 return ((o->op_flags & OPf_KIDS) ? OPc_UNOP :
184#ifdef USE_ITHREADS
185 (o->op_flags & OPf_REF) ? OPc_PADOP : OPc_BASEOP);
186#else
187 (o->op_flags & OPf_REF) ? OPc_SVOP : OPc_BASEOP);
188#endif
189 case OA_LOOPEXOP:
190 /*
191 * next, last, redo, dump and goto use OPf_SPECIAL to indicate that a
192 * label was omitted (in which case it's a BASEOP) or else a term was
193 * seen. In this last case, all except goto are definitely PVOP but
194 * goto is either a PVOP (with an ordinary constant label), an UNOP
195 * with OPf_STACKED (with a non-constant non-sub) or an UNOP for
196 * OP_REFGEN (with goto &sub) in which case OPf_STACKED also seems to
197 * get set.
198 */
199 if (o->op_flags & OPf_STACKED)
200 return OPc_UNOP;
201 else if (o->op_flags & OPf_SPECIAL)
202 return OPc_BASEOP;
203 else
204 return OPc_PVOP;
205 }
206 warn("can't determine class of operator %s, assuming BASEOP\n",
207 PL_op_name[o->op_type]);
208 return OPc_BASEOP;
209}
210
211static char *
212cc_opclassname(pTHX_ const OP *o)
213{
214 return opclassnames[cc_opclass(aTHX_ o)];
215}
216
217static SV *
218make_sv_object(pTHX_ SV *arg, SV *sv)
219{
220 char *type = 0;
221 IV iv;
222 dMY_CXT;
223
224 for (iv = 0; iv < sizeof(specialsv_list)/sizeof(SV*); iv++) {
225 if (sv == specialsv_list[iv]) {
226 type = "B::SPECIAL";
227 break;
228 }
229 }
230 if (!type) {
231 type = svclassnames[SvTYPE(sv)];
232 iv = PTR2IV(sv);
233 }
234 sv_setiv(newSVrv(arg, type), iv);
235 return arg;
236}
237
238static SV *
239make_mg_object(pTHX_ SV *arg, MAGIC *mg)
240{
241 sv_setiv(newSVrv(arg, "B::MAGIC"), PTR2IV(mg));
242 return arg;
243}
244
245static SV *
246cstring(pTHX_ SV *sv, bool perlstyle)
247{
248 SV *sstr = newSVpvn("", 0);
249
250 if (!SvOK(sv))
251 sv_setpvn(sstr, "0", 1);
252 else if (perlstyle && SvUTF8(sv)) {
253 SV *tmpsv = sv_newmortal(); /* Temporary SV to feed sv_uni_display */
254 const STRLEN len = SvCUR(sv);
255 const char *s = sv_uni_display(tmpsv, sv, 8*len, UNI_DISPLAY_QQ);
256 sv_setpvn(sstr,"\"",1);
257 while (*s)
258 {
259 if (*s == '"')
260 sv_catpvn(sstr, "\\\"", 2);
261 else if (*s == '$')
262 sv_catpvn(sstr, "\\$", 2);
263 else if (*s == '@')
264 sv_catpvn(sstr, "\\@", 2);
265 else if (*s == '\\')
266 {
267 if (strchr("nrftax\\",*(s+1)))
268 sv_catpvn(sstr, s++, 2);
269 else
270 sv_catpvn(sstr, "\\\\", 2);
271 }
272 else /* should always be printable */
273 sv_catpvn(sstr, s, 1);
274 ++s;
275 }
276 sv_catpv(sstr, "\"");
277 return sstr;
278 }
279 else
280 {
281 /* XXX Optimise? */
282 STRLEN len;
283 const char *s = SvPV(sv, len);
284 sv_catpv(sstr, "\"");
285 for (; len; len--, s++)
286 {
287 /* At least try a little for readability */
288 if (*s == '"')
289 sv_catpv(sstr, "\\\"");
290 else if (*s == '\\')
291 sv_catpv(sstr, "\\\\");
292 /* trigraphs - bleagh */
293 else if (!perlstyle && *s == '?' && len>=3 && s[1] == '?') {
294 char escbuff[5]; /* to fit backslash, 3 octals + trailing \0 */
295 sprintf(escbuff, "\\%03o", '?');
296 sv_catpv(sstr, escbuff);
297 }
298 else if (perlstyle && *s == '$')
299 sv_catpv(sstr, "\\$");
300 else if (perlstyle && *s == '@')
301 sv_catpv(sstr, "\\@");
302#ifdef EBCDIC
303 else if (isPRINT(*s))
304#else
305 else if (*s >= ' ' && *s < 127)
306#endif /* EBCDIC */
307 sv_catpvn(sstr, s, 1);
308 else if (*s == '\n')
309 sv_catpv(sstr, "\\n");
310 else if (*s == '\r')
311 sv_catpv(sstr, "\\r");
312 else if (*s == '\t')
313 sv_catpv(sstr, "\\t");
314 else if (*s == '\a')
315 sv_catpv(sstr, "\\a");
316 else if (*s == '\b')
317 sv_catpv(sstr, "\\b");
318 else if (*s == '\f')
319 sv_catpv(sstr, "\\f");
320 else if (!perlstyle && *s == '\v')
321 sv_catpv(sstr, "\\v");
322 else
323 {
324 /* Don't want promotion of a signed -1 char in sprintf args */
325 char escbuff[5]; /* to fit backslash, 3 octals + trailing \0 */
326 const unsigned char c = (unsigned char) *s;
327 sprintf(escbuff, "\\%03o", c);
328 sv_catpv(sstr, escbuff);
329 }
330 /* XXX Add line breaks if string is long */
331 }
332 sv_catpv(sstr, "\"");
333 }
334 return sstr;
335}
336
337static SV *
338cchar(pTHX_ SV *sv)
339{
340 SV *sstr = newSVpvn("'", 1);
341 const char *s = SvPV_nolen(sv);
342
343 if (*s == '\'')
344 sv_catpvn(sstr, "\\'", 2);
345 else if (*s == '\\')
346 sv_catpvn(sstr, "\\\\", 2);
347#ifdef EBCDIC
348 else if (isPRINT(*s))
349#else
350 else if (*s >= ' ' && *s < 127)
351#endif /* EBCDIC */
352 sv_catpvn(sstr, s, 1);
353 else if (*s == '\n')
354 sv_catpvn(sstr, "\\n", 2);
355 else if (*s == '\r')
356 sv_catpvn(sstr, "\\r", 2);
357 else if (*s == '\t')
358 sv_catpvn(sstr, "\\t", 2);
359 else if (*s == '\a')
360 sv_catpvn(sstr, "\\a", 2);
361 else if (*s == '\b')
362 sv_catpvn(sstr, "\\b", 2);
363 else if (*s == '\f')
364 sv_catpvn(sstr, "\\f", 2);
365 else if (*s == '\v')
366 sv_catpvn(sstr, "\\v", 2);
367 else
368 {
369 /* no trigraph support */
370 char escbuff[5]; /* to fit backslash, 3 octals + trailing \0 */
371 /* Don't want promotion of a signed -1 char in sprintf args */
372 unsigned char c = (unsigned char) *s;
373 sprintf(escbuff, "\\%03o", c);
374 sv_catpv(sstr, escbuff);
375 }
376 sv_catpvn(sstr, "'", 1);
377 return sstr;
378}
379
380static void
381walkoptree(pTHX_ SV *opsv, const char *method)
382{
383 dSP;
384 OP *o, *kid;
385 dMY_CXT;
386
387 if (!SvROK(opsv))
388 croak("opsv is not a reference");
389 opsv = sv_mortalcopy(opsv);
390 o = INT2PTR(OP*,SvIV((SV*)SvRV(opsv)));
391 if (walkoptree_debug) {
392 PUSHMARK(sp);
393 XPUSHs(opsv);
394 PUTBACK;
395 perl_call_method("walkoptree_debug", G_DISCARD);
396 }
397 PUSHMARK(sp);
398 XPUSHs(opsv);
399 PUTBACK;
400 perl_call_method(method, G_DISCARD);
401 if (o && (o->op_flags & OPf_KIDS)) {
402 for (kid = ((UNOP*)o)->op_first; kid; kid = kid->op_sibling) {
403 /* Use the same opsv. Rely on methods not to mess it up. */
404 sv_setiv(newSVrv(opsv, cc_opclassname(aTHX_ kid)), PTR2IV(kid));
405 walkoptree(aTHX_ opsv, method);
406 }
407 }
408 if (o && (cc_opclass(aTHX_ o) == OPc_PMOP) && o->op_type != OP_PUSHRE
409 && (kid = cPMOPo->op_pmreplroot))
410 {
411 sv_setiv(newSVrv(opsv, cc_opclassname(aTHX_ kid)), PTR2IV(kid));
412 walkoptree(aTHX_ opsv, method);
413 }
414}
415
416static SV **
417oplist(pTHX_ OP *o, SV **SP)
418{
419 for(; o; o = o->op_next) {
420 SV *opsv;
421#if PERL_VERSION >= 9
422 if (o->op_opt == 0)
423 break;
424 o->op_opt = 0;
425#else
426 if (o->op_seq == 0)
427 break;
428 o->op_seq = 0;
429#endif
430 opsv = sv_newmortal();
431 sv_setiv(newSVrv(opsv, cc_opclassname(aTHX_ (OP*)o)), PTR2IV(o));
432 XPUSHs(opsv);
433 switch (o->op_type) {
434 case OP_SUBST:
435 SP = oplist(aTHX_ cPMOPo->op_pmreplstart, SP);
436 continue;
437 case OP_SORT:
438 if (o->op_flags & OPf_STACKED && o->op_flags & OPf_SPECIAL) {
439 OP *kid = cLISTOPo->op_first->op_sibling; /* pass pushmark */
440 kid = kUNOP->op_first; /* pass rv2gv */
441 kid = kUNOP->op_first; /* pass leave */
442 SP = oplist(aTHX_ kid->op_next, SP);
443 }
444 continue;
445 }
446 switch (PL_opargs[o->op_type] & OA_CLASS_MASK) {
447 case OA_LOGOP:
448 SP = oplist(aTHX_ cLOGOPo->op_other, SP);
449 break;
450 case OA_LOOP:
451 SP = oplist(aTHX_ cLOOPo->op_lastop, SP);
452 SP = oplist(aTHX_ cLOOPo->op_nextop, SP);
453 SP = oplist(aTHX_ cLOOPo->op_redoop, SP);
454 break;
455 }
456 }
457 return SP;
458}
459
460typedef OP *B__OP;
461typedef UNOP *B__UNOP;
462typedef BINOP *B__BINOP;
463typedef LOGOP *B__LOGOP;
464typedef LISTOP *B__LISTOP;
465typedef PMOP *B__PMOP;
466typedef SVOP *B__SVOP;
467typedef PADOP *B__PADOP;
468typedef PVOP *B__PVOP;
469typedef LOOP *B__LOOP;
470typedef COP *B__COP;
471
472typedef SV *B__SV;
473typedef SV *B__IV;
474typedef SV *B__PV;
475typedef SV *B__NV;
476typedef SV *B__PVMG;
477typedef SV *B__PVLV;
478typedef SV *B__BM;
479typedef SV *B__RV;
480typedef SV *B__FM;
481typedef AV *B__AV;
482typedef HV *B__HV;
483typedef CV *B__CV;
484typedef GV *B__GV;
485typedef IO *B__IO;
486
487typedef MAGIC *B__MAGIC;
488
489MODULE = B PACKAGE = B PREFIX = B_
490
491PROTOTYPES: DISABLE
492
493BOOT:
494{
495 HV *stash = gv_stashpvn("B", 1, TRUE);
496 AV *export_ok = perl_get_av("B::EXPORT_OK",TRUE);
497 MY_CXT_INIT;
498 specialsv_list[0] = Nullsv;
499 specialsv_list[1] = &PL_sv_undef;
500 specialsv_list[2] = &PL_sv_yes;
501 specialsv_list[3] = &PL_sv_no;
502 specialsv_list[4] = pWARN_ALL;
503 specialsv_list[5] = pWARN_NONE;
504 specialsv_list[6] = pWARN_STD;
505#if PERL_VERSION <= 8
506# define CVf_ASSERTION 0
507#endif
508#include "defsubs.h"
509}
510
511#define B_main_cv() PL_main_cv
512#define B_init_av() PL_initav
513#define B_inc_gv() PL_incgv
514#define B_check_av() PL_checkav_save
515#define B_begin_av() PL_beginav_save
516#define B_end_av() PL_endav
517#define B_main_root() PL_main_root
518#define B_main_start() PL_main_start
519#define B_amagic_generation() PL_amagic_generation
520#define B_defstash() PL_defstash
521#define B_curstash() PL_curstash
522#define B_dowarn() PL_dowarn
523#define B_comppadlist() (PL_main_cv ? CvPADLIST(PL_main_cv) : CvPADLIST(PL_compcv))
524#define B_sv_undef() &PL_sv_undef
525#define B_sv_yes() &PL_sv_yes
526#define B_sv_no() &PL_sv_no
527#define B_formfeed() PL_formfeed
528#ifdef USE_ITHREADS
529#define B_regex_padav() PL_regex_padav
530#endif
531
532B::AV
533B_init_av()
534
535B::AV
536B_check_av()
537
538B::AV
539B_begin_av()
540
541B::AV
542B_end_av()
543
544B::GV
545B_inc_gv()
546
547#ifdef USE_ITHREADS
548
549B::AV
550B_regex_padav()
551
552#endif
553
554B::CV
555B_main_cv()
556
557B::OP
558B_main_root()
559
560B::OP
561B_main_start()
562
563long
564B_amagic_generation()
565
566B::AV
567B_comppadlist()
568
569B::SV
570B_sv_undef()
571
572B::SV
573B_sv_yes()
574
575B::SV
576B_sv_no()
577
578B::HV
579B_curstash()
580
581B::HV
582B_defstash()
583
584U8
585B_dowarn()
586
587B::SV
588B_formfeed()
589
590void
591B_warnhook()
592 CODE:
593 ST(0) = make_sv_object(aTHX_ sv_newmortal(), PL_warnhook);
594
595void
596B_diehook()
597 CODE:
598 ST(0) = make_sv_object(aTHX_ sv_newmortal(), PL_diehook);
599
600MODULE = B PACKAGE = B
601
602void
603walkoptree(opsv, method)
604 SV * opsv
605 const char * method
606 CODE:
607 walkoptree(aTHX_ opsv, method);
608
609int
610walkoptree_debug(...)
611 CODE:
612 dMY_CXT;
613 RETVAL = walkoptree_debug;
614 if (items > 0 && SvTRUE(ST(1)))
615 walkoptree_debug = 1;
616 OUTPUT:
617 RETVAL
618
619#define address(sv) PTR2IV(sv)
620
621IV
622address(sv)
623 SV * sv
624
625B::SV
626svref_2object(sv)
627 SV * sv
628 CODE:
629 if (!SvROK(sv))
630 croak("argument is not a reference");
631 RETVAL = (SV*)SvRV(sv);
632 OUTPUT:
633 RETVAL
634
635void
636opnumber(name)
637const char * name
638CODE:
639{
640 int i;
641 IV result = -1;
642 ST(0) = sv_newmortal();
643 if (strncmp(name,"pp_",3) == 0)
644 name += 3;
645 for (i = 0; i < PL_maxo; i++)
646 {
647 if (strcmp(name, PL_op_name[i]) == 0)
648 {
649 result = i;
650 break;
651 }
652 }
653 sv_setiv(ST(0),result);
654}
655
656void
657ppname(opnum)
658 int opnum
659 CODE:
660 ST(0) = sv_newmortal();
661 if (opnum >= 0 && opnum < PL_maxo) {
662 sv_setpvn(ST(0), "pp_", 3);
663 sv_catpv(ST(0), PL_op_name[opnum]);
664 }
665
666void
667hash(sv)
668 SV * sv
669 CODE:
670 STRLEN len;
671 U32 hash = 0;
672 char hexhash[19]; /* must fit "0xffffffffffffffff" plus trailing \0 */
673 const char *s = SvPV(sv, len);
674 PERL_HASH(hash, s, len);
675 sprintf(hexhash, "0x%"UVxf, (UV)hash);
676 ST(0) = sv_2mortal(newSVpv(hexhash, 0));
677
678#define cast_I32(foo) (I32)foo
679IV
680cast_I32(i)
681 IV i
682
683void
684minus_c()
685 CODE:
686 PL_minus_c = TRUE;
687
688void
689save_BEGINs()
690 CODE:
691 PL_savebegin = TRUE;
692
693SV *
694cstring(sv)
695 SV * sv
696 CODE:
697 RETVAL = cstring(aTHX_ sv, 0);
698 OUTPUT:
699 RETVAL
700
701SV *
702perlstring(sv)
703 SV * sv
704 CODE:
705 RETVAL = cstring(aTHX_ sv, 1);
706 OUTPUT:
707 RETVAL
708
709SV *
710cchar(sv)
711 SV * sv
712 CODE:
713 RETVAL = cchar(aTHX_ sv);
714 OUTPUT:
715 RETVAL
716
717void
718threadsv_names()
719 PPCODE:
720#if PERL_VERSION <= 8
721# ifdef USE_5005THREADS
722 int i;
723 const STRLEN len = strlen(PL_threadsv_names);
724
725 EXTEND(sp, len);
726 for (i = 0; i < len; i++)
727 PUSHs(sv_2mortal(newSVpvn(&PL_threadsv_names[i], 1)));
728# endif
729#endif
730
731#define OP_next(o) o->op_next
732#define OP_sibling(o) o->op_sibling
733#define OP_desc(o) PL_op_desc[o->op_type]
734#define OP_targ(o) o->op_targ
735#define OP_type(o) o->op_type
736#if PERL_VERSION >= 9
737# define OP_opt(o) o->op_opt
738# define OP_static(o) o->op_static
739#else
740# define OP_seq(o) o->op_seq
741#endif
742#define OP_flags(o) o->op_flags
743#define OP_private(o) o->op_private
744#define OP_spare(o) o->op_spare
745
746MODULE = B PACKAGE = B::OP PREFIX = OP_
747
748size_t
749OP_size(o)
750 B::OP o
751 CODE:
752 RETVAL = opsizes[cc_opclass(aTHX_ o)];
753 OUTPUT:
754 RETVAL
755
756B::OP
757OP_next(o)
758 B::OP o
759
760B::OP
761OP_sibling(o)
762 B::OP o
763
764char *
765OP_name(o)
766 B::OP o
767 CODE:
768 RETVAL = PL_op_name[o->op_type];
769 OUTPUT:
770 RETVAL
771
772
773void
774OP_ppaddr(o)
775 B::OP o
776 PREINIT:
777 int i;
778 SV *sv = sv_newmortal();
779 CODE:
780 sv_setpvn(sv, "PL_ppaddr[OP_", 13);
781 sv_catpv(sv, PL_op_name[o->op_type]);
782 for (i=13; (STRLEN)i < SvCUR(sv); ++i)
783 SvPVX(sv)[i] = toUPPER(SvPVX(sv)[i]);
784 sv_catpv(sv, "]");
785 ST(0) = sv;
786
787char *
788OP_desc(o)
789 B::OP o
790
791PADOFFSET
792OP_targ(o)
793 B::OP o
794
795U16
796OP_type(o)
797 B::OP o
798
799#if PERL_VERSION >= 9
800
801U8
802OP_opt(o)
803 B::OP o
804
805U8
806OP_static(o)
807 B::OP o
808
809#else
810
811U16
812OP_seq(o)
813 B::OP o
814
815#endif
816
817U8
818OP_flags(o)
819 B::OP o
820
821U8
822OP_private(o)
823 B::OP o
824
825#if PERL_VERSION >= 9
826
827U8
828OP_spare(o)
829 B::OP o
830
831#endif
832
833void
834OP_oplist(o)
835 B::OP o
836 PPCODE:
837 SP = oplist(aTHX_ o, SP);
838
839#define UNOP_first(o) o->op_first
840
841MODULE = B PACKAGE = B::UNOP PREFIX = UNOP_
842
843B::OP
844UNOP_first(o)
845 B::UNOP o
846
847#define BINOP_last(o) o->op_last
848
849MODULE = B PACKAGE = B::BINOP PREFIX = BINOP_
850
851B::OP
852BINOP_last(o)
853 B::BINOP o
854
855#define LOGOP_other(o) o->op_other
856
857MODULE = B PACKAGE = B::LOGOP PREFIX = LOGOP_
858
859B::OP
860LOGOP_other(o)
861 B::LOGOP o
862
863MODULE = B PACKAGE = B::LISTOP PREFIX = LISTOP_
864
865U32
866LISTOP_children(o)
867 B::LISTOP o
868 OP * kid = NO_INIT
869 int i = NO_INIT
870 CODE:
871 i = 0;
872 for (kid = o->op_first; kid; kid = kid->op_sibling)
873 i++;
874 RETVAL = i;
875 OUTPUT:
876 RETVAL
877
878#define PMOP_pmreplroot(o) o->op_pmreplroot
879#define PMOP_pmreplstart(o) o->op_pmreplstart
880#define PMOP_pmnext(o) o->op_pmnext
881#define PMOP_pmregexp(o) PM_GETRE(o)
882#ifdef USE_ITHREADS
883#define PMOP_pmoffset(o) o->op_pmoffset
884#define PMOP_pmstashpv(o) o->op_pmstashpv
885#else
886#define PMOP_pmstash(o) o->op_pmstash
887#endif
888#define PMOP_pmflags(o) o->op_pmflags
889#define PMOP_pmpermflags(o) o->op_pmpermflags
890#define PMOP_pmdynflags(o) o->op_pmdynflags
891
892MODULE = B PACKAGE = B::PMOP PREFIX = PMOP_
893
894void
895PMOP_pmreplroot(o)
896 B::PMOP o
897 OP * root = NO_INIT
898 CODE:
899 ST(0) = sv_newmortal();
900 root = o->op_pmreplroot;
901 /* OP_PUSHRE stores an SV* instead of an OP* in op_pmreplroot */
902 if (o->op_type == OP_PUSHRE) {
903#ifdef USE_ITHREADS
904 sv_setiv(ST(0), INT2PTR(PADOFFSET,root) );
905#else
906 sv_setiv(newSVrv(ST(0), root ?
907 svclassnames[SvTYPE((SV*)root)] : "B::SV"),
908 PTR2IV(root));
909#endif
910 }
911 else {
912 sv_setiv(newSVrv(ST(0), cc_opclassname(aTHX_ root)), PTR2IV(root));
913 }
914
915B::OP
916PMOP_pmreplstart(o)
917 B::PMOP o
918
919B::PMOP
920PMOP_pmnext(o)
921 B::PMOP o
922
923#ifdef USE_ITHREADS
924
925IV
926PMOP_pmoffset(o)
927 B::PMOP o
928
929char*
930PMOP_pmstashpv(o)
931 B::PMOP o
932
933#else
934
935B::HV
936PMOP_pmstash(o)
937 B::PMOP o
938
939#endif
940
941U32
942PMOP_pmflags(o)
943 B::PMOP o
944
945U32
946PMOP_pmpermflags(o)
947 B::PMOP o
948
949U8
950PMOP_pmdynflags(o)
951 B::PMOP o
952
953void
954PMOP_precomp(o)
955 B::PMOP o
956 REGEXP * rx = NO_INIT
957 CODE:
958 ST(0) = sv_newmortal();
959 rx = PM_GETRE(o);
960 if (rx)
961 sv_setpvn(ST(0), rx->precomp, rx->prelen);
962
963#define SVOP_sv(o) cSVOPo->op_sv
964#define SVOP_gv(o) ((GV*)cSVOPo->op_sv)
965
966MODULE = B PACKAGE = B::SVOP PREFIX = SVOP_
967
968B::SV
969SVOP_sv(o)
970 B::SVOP o
971
972B::GV
973SVOP_gv(o)
974 B::SVOP o
975
976#define PADOP_padix(o) o->op_padix
977#define PADOP_sv(o) (o->op_padix ? PAD_SVl(o->op_padix) : Nullsv)
978#define PADOP_gv(o) ((o->op_padix \
979 && SvTYPE(PAD_SVl(o->op_padix)) == SVt_PVGV) \
980 ? (GV*)PAD_SVl(o->op_padix) : Nullgv)
981
982MODULE = B PACKAGE = B::PADOP PREFIX = PADOP_
983
984PADOFFSET
985PADOP_padix(o)
986 B::PADOP o
987
988B::SV
989PADOP_sv(o)
990 B::PADOP o
991
992B::GV
993PADOP_gv(o)
994 B::PADOP o
995
996MODULE = B PACKAGE = B::PVOP PREFIX = PVOP_
997
998void
999PVOP_pv(o)
1000 B::PVOP o
1001 CODE:
1002 /*
1003 * OP_TRANS uses op_pv to point to a table of 256 or >=258 shorts
1004 * whereas other PVOPs point to a null terminated string.
1005 */
1006 if (o->op_type == OP_TRANS &&
1007 (o->op_private & OPpTRANS_COMPLEMENT) &&
1008 !(o->op_private & OPpTRANS_DELETE))
1009 {
1010 const short* const tbl = (short*)o->op_pv;
1011 const short entries = 257 + tbl[256];
1012 ST(0) = sv_2mortal(newSVpv(o->op_pv, entries * sizeof(short)));
1013 }
1014 else if (o->op_type == OP_TRANS) {
1015 ST(0) = sv_2mortal(newSVpv(o->op_pv, 256 * sizeof(short)));
1016 }
1017 else
1018 ST(0) = sv_2mortal(newSVpv(o->op_pv, 0));
1019
1020#define LOOP_redoop(o) o->op_redoop
1021#define LOOP_nextop(o) o->op_nextop
1022#define LOOP_lastop(o) o->op_lastop
1023
1024MODULE = B PACKAGE = B::LOOP PREFIX = LOOP_
1025
1026
1027B::OP
1028LOOP_redoop(o)
1029 B::LOOP o
1030
1031B::OP
1032LOOP_nextop(o)
1033 B::LOOP o
1034
1035B::OP
1036LOOP_lastop(o)
1037 B::LOOP o
1038
1039#define COP_label(o) o->cop_label
1040#define COP_stashpv(o) CopSTASHPV(o)
1041#define COP_stash(o) CopSTASH(o)
1042#define COP_file(o) CopFILE(o)
1043#define COP_filegv(o) CopFILEGV(o)
1044#define COP_cop_seq(o) o->cop_seq
1045#define COP_arybase(o) o->cop_arybase
1046#define COP_line(o) CopLINE(o)
1047#define COP_warnings(o) o->cop_warnings
1048#define COP_io(o) o->cop_io
1049
1050MODULE = B PACKAGE = B::COP PREFIX = COP_
1051
1052char *
1053COP_label(o)
1054 B::COP o
1055
1056char *
1057COP_stashpv(o)
1058 B::COP o
1059
1060B::HV
1061COP_stash(o)
1062 B::COP o
1063
1064char *
1065COP_file(o)
1066 B::COP o
1067
1068B::GV
1069COP_filegv(o)
1070 B::COP o
1071
1072
1073U32
1074COP_cop_seq(o)
1075 B::COP o
1076
1077I32
1078COP_arybase(o)
1079 B::COP o
1080
1081U32
1082COP_line(o)
1083 B::COP o
1084
1085B::SV
1086COP_warnings(o)
1087 B::COP o
1088
1089B::SV
1090COP_io(o)
1091 B::COP o
1092
1093MODULE = B PACKAGE = B::SV
1094
1095U32
1096SvTYPE(sv)
1097 B::SV sv
1098
1099#define object_2svref(sv) sv
1100#define SVREF SV *
1101
1102SVREF
1103object_2svref(sv)
1104 B::SV sv
1105
1106MODULE = B PACKAGE = B::SV PREFIX = Sv
1107
1108U32
1109SvREFCNT(sv)
1110 B::SV sv
1111
1112U32
1113SvFLAGS(sv)
1114 B::SV sv
1115
1116U32
1117SvPOK(sv)
1118 B::SV sv
1119
1120U32
1121SvROK(sv)
1122 B::SV sv
1123
1124U32
1125SvMAGICAL(sv)
1126 B::SV sv
1127
1128MODULE = B PACKAGE = B::IV PREFIX = Sv
1129
1130IV
1131SvIV(sv)
1132 B::IV sv
1133
1134IV
1135SvIVX(sv)
1136 B::IV sv
1137
1138UV
1139SvUVX(sv)
1140 B::IV sv
1141
1142
1143MODULE = B PACKAGE = B::IV
1144
1145#define needs64bits(sv) ((I32)SvIVX(sv) != SvIVX(sv))
1146
1147int
1148needs64bits(sv)
1149 B::IV sv
1150
1151void
1152packiv(sv)
1153 B::IV sv
1154 CODE:
1155 if (sizeof(IV) == 8) {
1156 U32 wp[2];
1157 const IV iv = SvIVX(sv);
1158 /*
1159 * The following way of spelling 32 is to stop compilers on
1160 * 32-bit architectures from moaning about the shift count
1161 * being >= the width of the type. Such architectures don't
1162 * reach this code anyway (unless sizeof(IV) > 8 but then
1163 * everything else breaks too so I'm not fussed at the moment).
1164 */
1165#ifdef UV_IS_QUAD
1166 wp[0] = htonl(((UV)iv) >> (sizeof(UV)*4));
1167#else
1168 wp[0] = htonl(((U32)iv) >> (sizeof(UV)*4));
1169#endif
1170 wp[1] = htonl(iv & 0xffffffff);
1171 ST(0) = sv_2mortal(newSVpvn((char *)wp, 8));
1172 } else {
1173 U32 w = htonl((U32)SvIVX(sv));
1174 ST(0) = sv_2mortal(newSVpvn((char *)&w, 4));
1175 }
1176
1177MODULE = B PACKAGE = B::NV PREFIX = Sv
1178
1179NV
1180SvNV(sv)
1181 B::NV sv
1182
1183NV
1184SvNVX(sv)
1185 B::NV sv
1186
1187MODULE = B PACKAGE = B::RV PREFIX = Sv
1188
1189B::SV
1190SvRV(sv)
1191 B::RV sv
1192
1193MODULE = B PACKAGE = B::PV PREFIX = Sv
1194
1195char*
1196SvPVX(sv)
1197 B::PV sv
1198
1199B::SV
1200SvRV(sv)
1201 B::PV sv
1202 CODE:
1203 if( SvROK(sv) ) {
1204 RETVAL = SvRV(sv);
1205 }
1206 else {
1207 croak( "argument is not SvROK" );
1208 }
1209 OUTPUT:
1210 RETVAL
1211
1212void
1213SvPV(sv)
1214 B::PV sv
1215 CODE:
1216 ST(0) = sv_newmortal();
1217 if( SvPOK(sv) ) {
1218 /* FIXME - we need a better way for B to identify PVs that are
1219 in the pads as variable names. */
1220 if((SvLEN(sv) && SvCUR(sv) >= SvLEN(sv))) {
1221 /* It claims to be longer than the space allocated for it -
1222 presuambly it's a variable name in the pad */
1223 sv_setpv(ST(0), SvPV_nolen_const(sv));
1224 } else {
1225 sv_setpvn(ST(0), SvPVX_const(sv), SvCUR(sv));
1226 }
1227 SvFLAGS(ST(0)) |= SvUTF8(sv);
1228 }
1229 else {
1230 /* XXX for backward compatibility, but should fail */
1231 /* croak( "argument is not SvPOK" ); */
1232 sv_setpvn(ST(0), NULL, 0);
1233 }
1234
1235void
1236SvPVBM(sv)
1237 B::PV sv
1238 CODE:
1239 ST(0) = sv_newmortal();
1240 sv_setpvn(ST(0), SvPVX_const(sv),
1241 SvCUR(sv) + (SvTYPE(sv) == SVt_PVBM ? 257 : 0));
1242
1243
1244STRLEN
1245SvLEN(sv)
1246 B::PV sv
1247
1248STRLEN
1249SvCUR(sv)
1250 B::PV sv
1251
1252MODULE = B PACKAGE = B::PVMG PREFIX = Sv
1253
1254void
1255SvMAGIC(sv)
1256 B::PVMG sv
1257 MAGIC * mg = NO_INIT
1258 PPCODE:
1259 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic)
1260 XPUSHs(make_mg_object(aTHX_ sv_newmortal(), mg));
1261
1262MODULE = B PACKAGE = B::PVMG
1263
1264B::HV
1265SvSTASH(sv)
1266 B::PVMG sv
1267
1268#define MgMOREMAGIC(mg) mg->mg_moremagic
1269#define MgPRIVATE(mg) mg->mg_private
1270#define MgTYPE(mg) mg->mg_type
1271#define MgFLAGS(mg) mg->mg_flags
1272#define MgOBJ(mg) mg->mg_obj
1273#define MgLENGTH(mg) mg->mg_len
1274#define MgREGEX(mg) PTR2IV(mg->mg_obj)
1275
1276MODULE = B PACKAGE = B::MAGIC PREFIX = Mg
1277
1278B::MAGIC
1279MgMOREMAGIC(mg)
1280 B::MAGIC mg
1281 CODE:
1282 if( MgMOREMAGIC(mg) ) {
1283 RETVAL = MgMOREMAGIC(mg);
1284 }
1285 else {
1286 XSRETURN_UNDEF;
1287 }
1288 OUTPUT:
1289 RETVAL
1290
1291U16
1292MgPRIVATE(mg)
1293 B::MAGIC mg
1294
1295char
1296MgTYPE(mg)
1297 B::MAGIC mg
1298
1299U8
1300MgFLAGS(mg)
1301 B::MAGIC mg
1302
1303B::SV
1304MgOBJ(mg)
1305 B::MAGIC mg
1306
1307IV
1308MgREGEX(mg)
1309 B::MAGIC mg
1310 CODE:
1311 if( mg->mg_type == 'r' ) {
1312 RETVAL = MgREGEX(mg);
1313 }
1314 else {
1315 croak( "REGEX is only meaningful on r-magic" );
1316 }
1317 OUTPUT:
1318 RETVAL
1319
1320SV*
1321precomp(mg)
1322 B::MAGIC mg
1323 CODE:
1324 if (mg->mg_type == 'r') {
1325 REGEXP* rx = (REGEXP*)mg->mg_obj;
1326 if( rx )
1327 RETVAL = newSVpvn( rx->precomp, rx->prelen );
1328 }
1329 else {
1330 croak( "precomp is only meaningful on r-magic" );
1331 }
1332 OUTPUT:
1333 RETVAL
1334
1335I32
1336MgLENGTH(mg)
1337 B::MAGIC mg
1338
1339void
1340MgPTR(mg)
1341 B::MAGIC mg
1342 CODE:
1343 ST(0) = sv_newmortal();
1344 if (mg->mg_ptr){
1345 if (mg->mg_len >= 0){
1346 sv_setpvn(ST(0), mg->mg_ptr, mg->mg_len);
1347 } else if (mg->mg_len == HEf_SVKEY) {
1348 ST(0) = make_sv_object(aTHX_
1349 sv_newmortal(), (SV*)mg->mg_ptr);
1350 }
1351 }
1352
1353MODULE = B PACKAGE = B::PVLV PREFIX = Lv
1354
1355U32
1356LvTARGOFF(sv)
1357 B::PVLV sv
1358
1359U32
1360LvTARGLEN(sv)
1361 B::PVLV sv
1362
1363char
1364LvTYPE(sv)
1365 B::PVLV sv
1366
1367B::SV
1368LvTARG(sv)
1369 B::PVLV sv
1370
1371MODULE = B PACKAGE = B::BM PREFIX = Bm
1372
1373I32
1374BmUSEFUL(sv)
1375 B::BM sv
1376
1377U16
1378BmPREVIOUS(sv)
1379 B::BM sv
1380
1381U8
1382BmRARE(sv)
1383 B::BM sv
1384
1385void
1386BmTABLE(sv)
1387 B::BM sv
1388 STRLEN len = NO_INIT
1389 char * str = NO_INIT
1390 CODE:
1391 str = SvPV(sv, len);
1392 /* Boyer-Moore table is just after string and its safety-margin \0 */
1393 ST(0) = sv_2mortal(newSVpvn(str + len + 1, 256));
1394
1395MODULE = B PACKAGE = B::GV PREFIX = Gv
1396
1397void
1398GvNAME(gv)
1399 B::GV gv
1400 CODE:
1401 ST(0) = sv_2mortal(newSVpvn(GvNAME(gv), GvNAMELEN(gv)));
1402
1403bool
1404is_empty(gv)
1405 B::GV gv
1406 CODE:
1407 RETVAL = GvGP(gv) == Null(GP*);
1408 OUTPUT:
1409 RETVAL
1410
1411void*
1412GvGP(gv)
1413 B::GV gv
1414
1415B::HV
1416GvSTASH(gv)
1417 B::GV gv
1418
1419B::SV
1420GvSV(gv)
1421 B::GV gv
1422
1423B::IO
1424GvIO(gv)
1425 B::GV gv
1426
1427B::FM
1428GvFORM(gv)
1429 B::GV gv
1430 CODE:
1431 RETVAL = (SV*)GvFORM(gv);
1432 OUTPUT:
1433 RETVAL
1434
1435B::AV
1436GvAV(gv)
1437 B::GV gv
1438
1439B::HV
1440GvHV(gv)
1441 B::GV gv
1442
1443B::GV
1444GvEGV(gv)
1445 B::GV gv
1446
1447B::CV
1448GvCV(gv)
1449 B::GV gv
1450
1451U32
1452GvCVGEN(gv)
1453 B::GV gv
1454
1455U32
1456GvLINE(gv)
1457 B::GV gv
1458
1459char *
1460GvFILE(gv)
1461 B::GV gv
1462
1463B::GV
1464GvFILEGV(gv)
1465 B::GV gv
1466
1467MODULE = B PACKAGE = B::GV
1468
1469U32
1470GvREFCNT(gv)
1471 B::GV gv
1472
1473U8
1474GvFLAGS(gv)
1475 B::GV gv
1476
1477MODULE = B PACKAGE = B::IO PREFIX = Io
1478
1479long
1480IoLINES(io)
1481 B::IO io
1482
1483long
1484IoPAGE(io)
1485 B::IO io
1486
1487long
1488IoPAGE_LEN(io)
1489 B::IO io
1490
1491long
1492IoLINES_LEFT(io)
1493 B::IO io
1494
1495char *
1496IoTOP_NAME(io)
1497 B::IO io
1498
1499B::GV
1500IoTOP_GV(io)
1501 B::IO io
1502
1503char *
1504IoFMT_NAME(io)
1505 B::IO io
1506
1507B::GV
1508IoFMT_GV(io)
1509 B::IO io
1510
1511char *
1512IoBOTTOM_NAME(io)
1513 B::IO io
1514
1515B::GV
1516IoBOTTOM_GV(io)
1517 B::IO io
1518
1519short
1520IoSUBPROCESS(io)
1521 B::IO io
1522
1523bool
1524IsSTD(io,name)
1525 B::IO io
1526 const char* name
1527 PREINIT:
1528 PerlIO* handle = 0;
1529 CODE:
1530 if( strEQ( name, "stdin" ) ) {
1531 handle = PerlIO_stdin();
1532 }
1533 else if( strEQ( name, "stdout" ) ) {
1534 handle = PerlIO_stdout();
1535 }
1536 else if( strEQ( name, "stderr" ) ) {
1537 handle = PerlIO_stderr();
1538 }
1539 else {
1540 croak( "Invalid value '%s'", name );
1541 }
1542 RETVAL = handle == IoIFP(io);
1543 OUTPUT:
1544 RETVAL
1545
1546MODULE = B PACKAGE = B::IO
1547
1548char
1549IoTYPE(io)
1550 B::IO io
1551
1552U8
1553IoFLAGS(io)
1554 B::IO io
1555
1556MODULE = B PACKAGE = B::AV PREFIX = Av
1557
1558SSize_t
1559AvFILL(av)
1560 B::AV av
1561
1562SSize_t
1563AvMAX(av)
1564 B::AV av
1565
1566#define AvOFF(av) ((XPVAV*)SvANY(av))->xof_off
1567
1568IV
1569AvOFF(av)
1570 B::AV av
1571
1572void
1573AvARRAY(av)
1574 B::AV av
1575 PPCODE:
1576 if (AvFILL(av) >= 0) {
1577 SV **svp = AvARRAY(av);
1578 I32 i;
1579 for (i = 0; i <= AvFILL(av); i++)
1580 XPUSHs(make_sv_object(aTHX_ sv_newmortal(), svp[i]));
1581 }
1582
1583void
1584AvARRAYelt(av, idx)
1585 B::AV av
1586 int idx
1587 PPCODE:
1588 if (idx >= 0 && AvFILL(av) >= 0 && idx <= AvFILL(av))
1589 XPUSHs(make_sv_object(aTHX_ sv_newmortal(), (AvARRAY(av)[idx])));
1590 else
1591 XPUSHs(make_sv_object(aTHX_ sv_newmortal(), NULL));
1592
1593
1594MODULE = B PACKAGE = B::AV
1595
1596U8
1597AvFLAGS(av)
1598 B::AV av
1599
1600MODULE = B PACKAGE = B::FM PREFIX = Fm
1601
1602IV
1603FmLINES(form)
1604 B::FM form
1605
1606MODULE = B PACKAGE = B::CV PREFIX = Cv
1607
1608U32
1609CvCONST(cv)
1610 B::CV cv
1611
1612B::HV
1613CvSTASH(cv)
1614 B::CV cv
1615
1616B::OP
1617CvSTART(cv)
1618 B::CV cv
1619
1620B::OP
1621CvROOT(cv)
1622 B::CV cv
1623
1624B::GV
1625CvGV(cv)
1626 B::CV cv
1627
1628char *
1629CvFILE(cv)
1630 B::CV cv
1631
1632long
1633CvDEPTH(cv)
1634 B::CV cv
1635
1636B::AV
1637CvPADLIST(cv)
1638 B::CV cv
1639
1640B::CV
1641CvOUTSIDE(cv)
1642 B::CV cv
1643
1644U32
1645CvOUTSIDE_SEQ(cv)
1646 B::CV cv
1647
1648void
1649CvXSUB(cv)
1650 B::CV cv
1651 CODE:
1652 ST(0) = sv_2mortal(newSViv(PTR2IV(CvXSUB(cv))));
1653
1654
1655void
1656CvXSUBANY(cv)
1657 B::CV cv
1658 CODE:
1659 ST(0) = CvCONST(cv) ?
1660 make_sv_object(aTHX_ sv_newmortal(),(SV *)CvXSUBANY(cv).any_ptr) :
1661 sv_2mortal(newSViv(CvXSUBANY(cv).any_iv));
1662
1663MODULE = B PACKAGE = B::CV
1664
1665U16
1666CvFLAGS(cv)
1667 B::CV cv
1668
1669MODULE = B PACKAGE = B::CV PREFIX = cv_
1670
1671B::SV
1672cv_const_sv(cv)
1673 B::CV cv
1674
1675
1676MODULE = B PACKAGE = B::HV PREFIX = Hv
1677
1678STRLEN
1679HvFILL(hv)
1680 B::HV hv
1681
1682STRLEN
1683HvMAX(hv)
1684 B::HV hv
1685
1686I32
1687HvKEYS(hv)
1688 B::HV hv
1689
1690I32
1691HvRITER(hv)
1692 B::HV hv
1693
1694char *
1695HvNAME(hv)
1696 B::HV hv
1697
1698B::PMOP
1699HvPMROOT(hv)
1700 B::HV hv
1701
1702void
1703HvARRAY(hv)
1704 B::HV hv
1705 PPCODE:
1706 if (HvKEYS(hv) > 0) {
1707 SV *sv;
1708 char *key;
1709 I32 len;
1710 (void)hv_iterinit(hv);
1711 EXTEND(sp, HvKEYS(hv) * 2);
1712 while ((sv = hv_iternextsv(hv, &key, &len))) {
1713 PUSHs(newSVpvn(key, len));
1714 PUSHs(make_sv_object(aTHX_ sv_newmortal(), sv));
1715 }
1716 }
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